Redetermination Of Lattice Parameters, Densities And Thermal Expansion Coefficients Of Silver And Gold, And The Perfection Of Their Structures
The redtermined lattice parameters of Ag and Au are as follows:a25=4.08626±0.00004 and 4.07894±0.00005 Å, resp., including the refraction correction of 0.00035; the densities are d25=10.4976±0.0003 and 19.2779±0.0018 gcm-3, resp. The thermal expansion coefficients between 10 and 65°C are: αAg=18.73·10-6 and αAu=13.4·10-6°C-1. Both metals showed a perfect structure (within the error limits). A complete recovery of the 99.999% pure metals from the consequences of cold work (filing) occurred at room temperature in about 24 hr. (Ag) and in 5 days (Au). The displacement of atoms is strongly retarded by the presence of impurities. A silver crystal quenched just below the melting point showed a lower density which increased during the heat treatment. This behavior can be explained by vacancies diffusing out of the crystal. © 1971 Springer-Verlag.
M. E. Straumanis, "Redetermination Of Lattice Parameters, Densities And Thermal Expansion Coefficients Of Silver And Gold, And The Perfection Of Their Structures," Monatshefte für Chemie, vol. 102, no. 5, pp. 1377 - 1386, Springer, Sep 1971.
The definitive version is available at https://doi.org/10.1007/BF00917194
Materials Science and Engineering
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01 Sep 1971